Valve construction



Jan. 21, 1936 P. F. BERRY VALVE "CONSTRUCTION Original Filed 001:. 27,1932 UNITED STATES PATENT OFFICE VALVE CONSTRUCTION Paul F. Berry,Columbus, Ohio Application October 27,1932, Serial No. 639,904 RenewedJune 18,1935

I 4 Claims.

This invention relates to a valve construction,

and it is an object of the invention to provide a construction of thiskind comprising two relatively movable rock members operating inrequired sequence one with respect to the other to allow for the desiredintake or exhaust of a fluid.

It isalso an object of the invention to provide a'structure of this kindwhich is particularly applicable for use in connection with small unitssuch as the compressor units of refrigerating apparatus.

Another object of the invention is to provide a Valve construction ofthis kind for use in connection with a compression cylinder or the likeand which construction operates in a manner to assure substantially fulleffective strokes of the piston reciprocating within the cylinder andmore particularly the suctionstroke of the piston.

The invention consists in the details of construction and inthecombination and arrangement of the several parts of my improved valveconstruction whereby certain important advantages are attained and thedevice rendered simpler, less expensive and otherwise more convenientand advantageous for use, as will be hereinafter more fully set forth.

The novel features of myinvention will hereinafter be definitelyclaimed.

constructed in accordance withmy invention and in applied position inconnection with a compressor;-

Figure 2 is a view partly in section and partly 'in side elevation ofone of the valve members as herein embodied together with the associatedoperating means therefor, certain of the ports comprised in the valvestructure being indicated by 1 broken lines;

Figure 3 is a fragmentary view partly in elevation and partly in sectionillustrating the valve members in position for intake into thecompression cylinder;

Figure 4 is a view in plan of the face of one of the valve memberscoacting directly with the compression cylinder;

Figure 5 is a view in elevation of the inner face of the second Valvemember.

denotes a drive shaft upon which is mounted for 5 rotation therewith adisc 2 provided in each of As disclosed in the accompanying drawing, I

in such figure.

its sider'faces with the cam groove 3, said cam grooves being of similarformation butin reverse relation. One of the grooves 3 is indicated byfull lines in Figure 2 and the other by brokenlines 5 The shaft! alsooperates to actuate a compressor piston 4 operating in a cylinder 5. TheWall 6 separating the cylinder 5 and the suction chamber C is formedwith a flat face 1 against which operates one of the rocking or 10oscillating valve members B. With the outer face of thevalve member 8contacts a second rocking or oscillating valve member 9. These members 8and 9 are mounted for rocking or oscillating movement about a commonaxis and herein dis- 5 closed as apin l0 bridging the space between theflat face'l o f the wall 6 and the block II. The block I I is slidablymounted within the cylindrical guide sleeve l2 extending within thechamber C through the outer wall It thereof. This block H is chambered,as at I5, and is provided with a port I6 for coaction with a port lldisposed through the valve member 9. The outer end of the. chamber 5communicates with the interior of a bellows like metal structure I8which is sealed or otherwise effectively connected to the block II atits inner end and at its outer end is sealed or otherwise effectivelyconnected to a plate l9 closing the outer end of the opening 20 throughthe wall l4 through which the guide sleeve I2 is directed. This plate 19has connected thereto a discharge line 2| for communication with theinterior of a condenser (not shown) and after the fashion shown inPatent #1,'799,449 dated April' 'l, 1931 and with which type ofrefrigerating apparatus the valve construction as herein disclosed isparticularly intended to be used.

The pressure generated within the bellowslike structure l8 will causethe same to expand 40 forcing the block I I against the valve member 9,the valve member 9 against the valve member 8, and the valve member 8against the flat face '5 thus assuring a perfect seal.

The valve member 8 isprovided therethrough with a port 22 for registerwith the port I! and which port 22 is also adapted to be brought intoregister with a port 23 extending through the wall 6 and opening intothe cylinder 5 inwardly at all times of the piston 4 working therein.The face of the valve member 8 which contacts with the flat face I ofthe wall 6 is provided with a channel or groove 24 intersecting the port22 and which is adapted to afford communication with the port 23 whentheport 22 of the member 8 is to one side of said port 23. The port 22is also adapted to register with a radially disposed groove or channel25 provided in the inner face of the valve member 9 and opening throughthe periphery of said valve member 9.

The registration of the port 22 with the groove or channel 25 occurswhen the port 22 has been moved a predetermined distance to one side ofthe port 23 and during which time the groove or channel 24 is incommunication with the port 23 so that upon the suction stroke of thepiston i the gas and/or vapor within the chamber C will be drawn intothe cylinder 5 through the groove or channel 25, the port 22, the grooveor channel 24 and the port 23. During this operation the valve members 8and 9 will be in the position as illustrated in Figure 3 to bring theports 22 and I! out of register.

When the ports I"! and 22 are in register the gas and/or vaporcompressed within the cylinder5 will pass out directly through the ports23, I! and 22 and through the port [6 to the line 2|.

Overlying the side faces of the disc 2 are the arms 26 and 26 each ofwhich having a part 21 as indicated by broken lines in Figures 1 and 2riding in the cam groove 3 of the adjacent side face of the disc 2.These arms 26 and 26 are disposed on such angle to assure the desiredrocking movement of the arms in proper sequence as determined by thegrooves 3. These arms 26 and 26, as herein disclosed, are suspended forrocking movement from a pin 28 supported at a desired point above thedisc 2 and the mounted extremities of the arms 26 and 26' are continuedby the arms 29 and 29. each having requisite operative connection, as at30, with one of the valve members 8 or 9.

In the operation of a refrigerating apparatus and especially of the typeas particularly disclosed in Patent #1,799,449 hereinbefore referred to,oil evaporated inthe course of operation of the machine will becomeintermingled with the gas drawn into the suction chamber C and with thegroove or channel 25 in register with the port 22 and the passageway 24in communication with the port 23, the gas and oil vapor will pass intothe cylinder 5 upon the intake stroke of the piston 4. When the piston 4has substantially reached the end of its intake stroke, the cam grooves3 will eifect through the arms 26 and 26' a reverse movement of the arms29 and 29 also resulting in a reverse rocking movement of the valvemembers 8 and 9 to the positions illustrated in Figure 3 and in whichpositions the valve members 8 and 9 efiectively seal against flowthrough theport 23.

Upon the rising or reverse stroke of the cylinder 5 the gas and/or vaporwithin the cylinder will be compressed and this compression action willtake place until the piston 4 has substantially completed itscompression stroke whereupon the cam grooves 3 will effect a reverserocking movement of the valve members 8 and 9 to bring the ports ll and22 in'register with each bers'8 and 9 assure an efiective functioning ofthe piston 4 throughout substantially the entire length of each of itscycles.

From the foregoing description it is thought to be obvious that a valveconstruction constructed in accordance with my invention is particularly5 well adapted for use by reason of the convenience and facility withwhich it may be assembled and operated, and it will also be obvious thatmy invention is susceptible of some change and modification withoutdeparting from the principles 10 and spirit thereof and for this reasonI do not wish to be understood as limiting myself to the precisearrangement and formation of the several parts herein shown in carryingout my invention in practice except as hereinafter claimed. 15

I claim:-

1. In a pump, in combination, a pair of rock valves arranged side byside and a seat for one of the valves, said seat having a port, meansfor axially supporting the valves, elastic means for urging the valvesone toward the other and toward the valve seat, means for reverselyrocking the valves in timed sequence, said valves having ports inregister with each other and with the port of the valve seat uponrocking movement of the valves in one direction, said ports being out ofregister upon movement of the valves in their opposite directionswhereby flow through said ports is closed, one of said valves having apassageway registering with the port of the valve 30 seat when the portsof the valves are out of register, said passageway also communicatingwith the port of the second valve when the ports in both of the valvesare out of register, and an inlet passageway carried by said secondvalve register- 35 ing with the port of the first valve when the portsof both valves are out of register.

2. A pump comprising, in combination, a pair of valve members arrangedside by side, a seat for one of the valve members, an axial support for40 the valve members, said valve members having movement along saidsupport, said seat having a port and each of the valve members having aport therethrough, the ports of the valve members being adapted toregister with each other and the 45 port of the valve seat, meansforlrocking said valve members one with respect to the other to positionthe port of one of the valve members to one side of the port of thesecond valve member whereby flow is closed through the valve mem- 60bers, opposed portions of the valve members having passageways incommunication with each other and with the port of the valve seat andthe port of one of the valve members when said valve members are in aposition to close flow 56 therethrough, means for rocking the valvemembers in timed sequence, and means for urging the valve members towardthe valve seat.

3. A pump comprising, in combination, a pair of valve members arrangedside by side, a seat for 60 one of the valve members, an axial supportfor the valve members, said valve members having movement along saidsupport, said seat having a port and each of the valve members having aport therethrough, the ports of the valve members being adapted toregister with each other and the port of the valve seat, means forrocking said valve members one with respect to the other to position theport of one of the valve members to one side of the port of the secondvalve member whereby bers are in a position to close flow therethrough,

means for rocking the valve members in timed sequence, and elastic meansfor urging the valve members toward the valve seat.

4. A pump comprising, in combination, a pair of valve members arrangedside by side, a seat for one of the valve members, an axial support forthe valve members, said valve members having movement along saidsupport,,said seat having a port and each of the valve members having aport therethrough, the ports of the valve members being adapted toregister with each other and.

the port of the valve seat, means for rocking said valve members onewith respect to the other to position the port of one of the valvemembers to one side of the port of the second valve member whereby flowis closed through the valve members, opposed portions of thevalvemembers having passageways in communication with each 5 other and withthe port of the valve seat and the port of one of the valve members whensaid valve members are in a position to close flow therethrough, meansfor rocking the valve members in timed sequence, and. means for urgingthe 10

